Carbureter.



A. HOWARTH. CAR-BURETEB..

APPLICATION FILED sEPInza, 1908.

Patented May 17, 1 910.

Wneases: wmexox,

A. HOWARTH.

GARBURETER.

APPLICATION FILED sBPyza, 190s.

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UNITED STATES PATENT OFFICE.

ALBERT HOWARTH, or' PROVIDENCE, EHDE ISLAND, Assrenon, BY MEsNE ASSIGN-MENTS, T STAB CARBURETOR AND SUPPLY COMPANY, .OF PROVIDENCE, RHODEISLAND, A CORPORATION OF RHODE ISLAND.

CARBURETEB'.

Specicationof Letters Patent.

Patented May 17, 1910.

Application led September 2S, 1908. Serial No. 455,194.

To all 'whom it may comem.'

Be it known that I, ALBERT HoWAR'rH, a citizen of the United States,residing at Provi-dence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements inyCarbureters, of which the following is a speeixeation, reference beinghad-therein to theaccompanying drawings.

Like reference numerals parts.

Figure 1 is a side elevation of my improved carbumeter. Fig. 2 is a viewof the same in central longitudinal section as seen on line of Fig. 3,the several valves being shown as fully open. Fig. 3 is a view of thesame in central longitudinal section as seen online yf y of Fig. 1, saidvalves 'being shown as fully open. 4 is a perspective view of the'combined throttle valve andl gasolene feeding valve. Fig. 5 is asectional view of the same as seen on line s z of 4. Fig. 6 is a sideelevation of said carburetor when the valves are nearly closed. Fig. 7is a central longitudinal section ofthe same as seen on linea a: of Fig.3. Fig. 8 is asectional.

View as seen on line w w of Fig. 6. Fig. 9 is a side elevation of thepresser bar and operating spring therefor constituting an element of mysaid invention. Fig. 10 is a si'de. elevation of the gasolene feedingvalve constituting another element of said invention.

My invention relates to the class of carbureters and consists of thenovel construction 'and combination of the several parts In the drawingsthe reference numeral 1 j represents the central or body portion of thecarbureter comprising acase or shell, and the inner space witharn thesame is the central ehamber, designated as 2. Am integzral turbe 3,`ofsmaller diameter opens at its bottom: into the chamber 2 and extendsupwardly from: the case 1. Its upper portion has the interiorscrew-thread 1. The tube conducts the gasolene vapor from the carburetorto the engine. A

The ease or body 1 has an annular flange 5 integrall therewith andextending downwardly. This alan-alzar4 flange 5 has an interiorScrew-thread, shown im 2, and T.

indicate like In the chamber 2 is a central vertical gasolene chamber orreceptacle 6, of tubularshape. An integral feed pipe 7 .opens into thegasolene chamber or tu'be 6, just below the center thereof and extendsat right angles therewith on one side.

The pipe 7 projects out from the case 1 and the yprojecting portion isscrew-threadedl on its eX- terior, as shown 1n Figs. 2 `and 7. A supnply pipe S has an interior screw-thread by adjacent thereto has aninterior screvv-y thread. The lower end of said bore has a smallcircular opening or orifice 9, which is slight-ly enlargedconcentrically, as represented at 10, and just above said enlargemont10, the bore has the annular shoulder 11, which forms a valve Seat for aball valve 12.

A pressure bar 13 is mounted vertically in the gasolene receptacle ortube 6, and has at its lower end la convex seat 14, by which it fitsupon the ball 12. A screw 15 having a head 16, tapered on its under sideto t the countersink of the gasolene tube or cham-ber 6, is in threadedengagement with thev bore of said tube and has a squared-olf end. Aspiral sp1-inl 17 has a bearing at its upper end against t e.saidsquared-olf. end and also a bearing at its lower end against the plainend of the bar 13. Thus, by the pressure of the spring 17 the ball valve12 is forcibly hel-d to its seat 11, when the parts of the device are inthe positions illustrated in Fig. 7 as also whenever the engine is notiny operation. p

The case 1 of the carbureter on the side opposite to the threaded end ofthe pipe `7 has a plain face indicated by the vertical line 18- and isthere perforated with a p-lurality of ports 19,. 19. A cross bar 20 `extends from the interior` surface off the ease 1 in a position betweenthe ports 19, 19, to the gasolene chamber or tube 6, and is preferablyintegral bothwith said case and tube. The bar 20 provides a bearing 21,within which a shaft 22 is loosely mounted. The shaft 2.2 at one endabuts loosely the inner surface of the case 1, as shown in 3.

The shaft22 within the chamber 2 carriesy a @am or curved arm 24, whichis adjustably secured to the shaft byva pin 25, or otherwise. A circulardisk serves as a relief valve 26 and is loosely and slidably mountedupon a cylii'idrical stem 27. The stein 27 may be eil her integral andcast with the cross bar 20, or it may be inserted in the cross bar 20and project therefrom. A collar 28 -is mounted loosely on the stem 27,and is held from detachment therefrom by the Cotter piu 29or in anyother preferred manner. A spiral spring 30- surrounds the valve stem 27loosely and has one end bearing against said collar 28 and the oppositeend bearing against the outer plain surface of the disk 26.

T he case 1 is slitted and at the slit, on opposite sides thereof, hastwo ears 31, extending in proximity with each other and tightened intoforcible contact together by a screw 32. The slit in the case is thusnarrowed and .the tube 33, hereinafter described, is clampedby saidscrew action.

A tubular body 33 is provided with an ex- .terior screw-thread on itsupper portion, by

which it fits within and engages thefflange 5 of the case 1. The bottomof the tube 33 is shown at 34 and constitutes with the tubular part 33 acup.V The outer surface of the bottom 34 of said cup is dished orconcaved as vshown at 35, but leaving a central boss 36, which iscentrally bored. The upper end of the bore is countersunk. There is aguide pin 37 on one side of the tube 33, ex-

tending inwardly. One or more air-admisv sion openings or ports 38 areout through the tube 33, preferably in approximately the shapeillustrated in the drawings,-or in any other suitable form.

A thumb piece 39 is mounted rotatably in the perforationpthrough theboss 36 of the bottom 34 of the'tube 33. This thumb piece 39 has atubular extension 40, which passes up through said perforation. Thistube 40 is cut longitudinally, b'efore insertion, to form four (or anypreferred number of) sections, as seen at 41. These sections are -flaredby a suitable tool to spread outwardly in a radial direction to fit thecountersunk portion of the bore and to lie in snug contact therewith, asillustrated in Figs. 2, 3 and 7,

and thereby have a spring-pressure 1n such contact. The thumb piece hasan axial opening, which 1s square transversely, as

lbest shown at 42.

In my construction there is a combined throttle valvevand air valvewhich is described as follows: A tube 43 has a circular loosely. Thetube 43 `is slidable looselyl within and along the tubular body 33 ofthe air inlet. The space Within the tube 43 below the disk 44constitutes the primary mixing chamber. A cross bar 49 extendsdiametrically across the tube 43 and has a central -The `valve rod,above said screw-threaded portion, has the form of an elongatedtruncated cone, as shown at 53. The upper end of the conical portion ofthe valve rod extends axially through the aperture 45 of the disk 44, upthrough the lower' endof the gasolene receptacle or tube 6, and at itsup per or large end it is in contact loosely with the ball valve 12. Theaction ofthis combined throttle' valve and air valve is hereinafterexplained.

An operating lever 54 is mounted on the shaft' 22 and fastened theretoby a key pin 5,5, or otherwise. The lower end of the lever 54 isenlarged into a sector shape, as represented at 56. The sector 56 at onecorner has an inwardly bent lip 57, which is in contact with a stop pin58, when the parts are in the position shown in Figs. 1 and 3, said'stop pin projecting from the case 1 outwardly, as best seen in-Fig. 3.At the opposite corner of the sector 56 there is an inwardly bent lip59, through which a set screw 6() passes. This screw, when in contactwith the stop pin 58 limits the oscillation of the lever 54 and shaft22, to close simultaneously the gasolene feed valve, the throttle Valveand the air valve, as'y represented in Fig. 7.

A link bar 61-is pivotally mounted on the upper end of the lever 54 bythe screw 62.

The link bar 6l is Inovedby the chauffeur, as desired, by means of' alever (not shown). The portion of the bore of the gasolene tube orreceptacle 6, which is directly opposite to the inner end of the feedplpe 7 is concaved as represented at 66 in Figs. 2 and 7.

The operation of my improved carburetor hereinbefore Vdescribed isexplained as follows: When the engine (not shown) is not operating, theparts of the carbureter-are in the positions shown in Fig. 7. Thegasolene flows from a tank (not shown) through the pipe 8, in thedirection indicated by the arrow 64 in Fig. 7, and fills the pipe 7 andthe gasolene chamber or receptacle 6 u to the screw or plug 15, or tothe height o the level of the gasolene in said tank, if such level isbelow the bottom of said screw or plug., At this time the bal-l valve 12is firmly tacle 6 by means `of the pressure of t `as shown in Fig. 7.

13, in whose socket 14 the ball 12 is seated above. At this time alsothecombined air valve and throttle valve i's closed, and the air supply iscut olf by the tube 43 which as a sliding shutter closes the airopenings 38,

As seen in Fig. 7, the disk 44, extending across the tubeJ 33 Within thesame but slidable therein, constitutes the throttle valve. In its closedposition there shown, it prevents all low of the carbureted air to theengine; but in the open position illustrated in-Fig. 2, it permits saidflow. The tube 43 which extends down from and is carried by.

the disk 44 constitutes the air valve, the lower portion of which'tube,when the parts are in the position represented in Fig. 7, acting as ashutter to close the air-admission openings or ports 38, but, when theparts are in the position seen in Fig. 2, rising wholly above said ports38, and so permitting atmospheric a1r to enter through the ports. Asalready stated, the space in the tube 43 beneath the disk 44 is theprimary mixing chamber, as will be hereinafter more fully explained.

When the chauffeur 'draws the link bar 61 in the direction indicated bythe arrow 65 in Fig. 1, the lever 54 is moved and causes a partialoscillation of the shaft 22 and connected parts from the ositions shownin Figs. 6 and 7 to the positlons shown in Figs. 1, 2 and 3. The limitsof said oscillation are fixed by the stop pin 58. The extent of thethrow of the lever 54 is varied as desired, to increase or diminish thesupply of the gasolene and air and so to change the rate of speed. Whenthe parts are in the position shown in Fig. 6, the inner end of thescrew 60 is in contact with the stop pin 58, but when the parts are inthe position shown in Fig. l, the vlip 57 of the sector plate 56 is inContact with said stop pin. The extent of the movement of'the -lin'k bar61 and lever 54 is regulated by adjustment of the screw 60.

The oscillation of the shaft 22 caused by the movement of the linkbar61, as just described, carries the lcam or curved arm 24 fromtheposition shown in Fig. 7 to the position shown in Fig. 2, becausesaidcam or arm is fastened upon said shaft and therefore turns with it. Thesuction of the engine then draws the combined throttle valve and airvalve (Fig. 4) .upward to the open position shown in Figs. 2 and 3. Asthe said valve has the cross bar 49, with which the valve rod 51 isengaged by the screw-threads,

as shown at 52 in the bearing 50 of saidcross bar, the whole valve rod51, 52, 53, is carried upwardly by the rise of said valve (Fig. 4). The`alve and connected parts continue to` riseiimtilgthe disk 44 comes intocontact with the curved arm or cam 24, then in the position shown inFig. 2, and is theite stopped.

Byymeafnsof the adjustment of the screw 60, as already explained, theextent of the throw of the lever 54 and the consequent oscillation -ofthe shaft 22 are pre-determined, and so the extent ofthe rise or openingof the Avalve are regulated as may be desired. The

rise of the valve rod 53, so caused, lifts the ball 12, thus unseat-ingthe ball from the annular shoulder l1 and lifting also the presser bar13 and increasing the tension of the spring 17. "lhus, the dischargingorifices 9 and 10 at the bottom of the gasolene chamber or tube 6 areopened, and the gasolene drops by gravity from said chamber or tube,aided by the suction of the engine, which sucks out the gasolene fromsaid discharge openings. The rise of the valve (Fig. 4)

above described, also causes the tube 43 thereof to move up along the'inner surface of the tube 33, andr so theports 38, 38, are uncovered.The suction of the engine draws in the atmospheric air through theseports into the valve. The air current, so formed, is deiiected vby theunder surface of the disk 44 and is there spread radially outward into aplurality of aircurrents (six, as shown in Fig. 5), and discharged fromthe valve through the apertures 46,46, into the chamber 2 of the easel.The air which has been sucked in by the engine through the ports 38moves with great forceup through the valve, and instantly takes up thegasolene discharged from the nozzle or orifice 9 of the gasolene chamberor tube 6, and dissipates it into vapor in passing, so that what lisdischarged through the apertures 46, 46, is gasolene vapor, orcarbureted air, the gasolene having been finely.. divided, torn apartand thoroughly mixed with atmospheric air by the `radially-spreading,forcible currents, streaming out through said apertures of the valve..The carburetedair then passes out through the chamber 2 and tube 3 tothe engine. The tube 43 beneath the disk 44 thus orms the first orprimary mixing chamber, in which the gasolene discharged from the nozzleA9 first comes in contact with the air currents which stream in throughthe ports j 38. The mingled gasolene vapor and air so discharged throughthe apertures 46, pass into the chamber 2, which constitutes thesecondary mixing chamber, whereby the convergence of the wall to theoutlet tube 3, which is of less diameter, said vapor and air are stillmore mingled before passing to the engine. 1

When the' carbureter is not in operation and the parts are in theyposition shown in Fig. 7, the lower portion of the valve rod 51 projectsout belowthe thumb piece 39 to some extent, as illustrated in Figs. 6and 7; but when the carbureter is in operation, the rise ofthe valve,already described, moves` the valve rod 51 up so that its lower end iswithin the square axial opening 42 of the presses or crowds down thevalve.

. tube 33, but leaves a small 'space there open,.

-thumb piece 39, as plainly represented in Figs. 2 and 3. The rod 51,being square in cross section and loose in the square axial opening 42of the thumb piece, can move longitudinally Without restraint, butcannot turn. The pressure of the spring 17 keeps the concaved end of thepresser bar 13 constantly in forcible contact with the ball 12 and alsokeeps the ball 12 in forcible contact with the large upper end of thevalve rod 53. The resistance to thisv spring-pressure is afforded by thethreaded engagement of the part 52 of the valve rod in the threadedbearing 50 of the cross bar of the valve.

For fine adjustment of the valve rod 451, 52, 53, to determine toanicety the exact amount of discharge of gasolenefrom the gasolenechamber or tube 6, the ,valve rod 51 is capable of an independentmovement on its threads 52 along the threaded bearing 50 of the crossbar 49. To make this adjustment the' piece or knob 39 is seized by thethumb and forenger and turned. The rotatory movement gives to the thumbpiece 39 a corresponding movement ,tothe valve rod 51, 52, 53, throughthe bearing 50. The guide pin 37 allows at all times by the verticalslot 48, the vertical movements of the valve and connected parts, butprevents rotation ofthe same.

To stop entirely the operation of the car-A bureter, the chauffeur drawsthe link bar 61 from the position shown in Fig; 1 to the positionishownin Fig. 6. This results in an oscillation of the shaft 22 and themovement of thecam or curved arm 24 from the positionshown in Fig. 1 tothe position shown in Fig. 6. This cam movement y As the curved arm orcam 24 is adjustable on the shaft 22 by means of the set screw 25, asalready stated, itis in practice 'advisable to adjust the arm or cam 24so that in its extreme j lowestV posit-ion it willnot entirely close thecombined throttle valve and air valve, but will nearly do so. In such acase, the bottom edge of the tube 43 does not quite close or cover theair ports 38 of the as illustrated in Fig. 6. The extent of such.opening depends upon and is regulated by the adjustment of the curvedarm or cam 24 upon the shaft 22. In such a position of the parts, aminimum quantity of air and of gasolene is supplied and the throttlevalve remains slightly open. The engine will therefore continue to run,but at its minimum speed; This cam action to depress the combinedthrottle and air Ivalve enables a quick reduction of speed to theminimum degree. y

When it is desired to stop the o eration of the vcarbureter entirely,the spar rin @Pw ratus is thrown out of circuit, and t e combinedthrottle and air valve then `descends automatically b gravity to theposition shown in Fig.. by whichl movement the tube 43 Wholly closes andcovers the air ports 38 of the tube 33. The descent of the valve carriesdown the valve rod 51, 52, 53, and the ball valve 12 is forced to theannular seat 1l by the force of the spring 17 and the presser bar 13.Thus, the supply of air and of gasolene to the carbureter is cut olf andthe supply of carbureted air to the engine is stop ed. As shown in Fig.7, however, the bal valve 12 is fully seated on the annular shoulder 11,before the valve tube 43 has entirely closed the air inlet ports 38, andthus -the discharge of gasolene from the nozzle of the tube 6 is shut o.The valve then descends automatically by its own gravity alongthe tube33, and by said movement withdraws the 'valve rod 53 from Contact withthe ball valve 1 2. When, the engine is started again, the suction,raises the valve and brings the valve rod 53 into` Contact with theball valve 12, andthereafter lifts the valve and connected parts to theposition shown in Fig. 2, as already explained.

Whenever, by any improper working or condition of the engine, there mayoccur an undue pressure of the gas or carbureted air in the chamber, orother tendencies or liabilities to an explosion, the relief valveillustrated in the drawings is useful. If the pressure of the aeriformcontents of the chamber 2 exceeds the pressure of the spring 30 on thestem 27 of the valve 26, such internal pressure exerted through theopenings 19, 19, forces: the valve disk 26 outwardly and overcomes theresisting pressure of the sprin 30, thus affording the necessary relief.gWh

pressure of the spring 30said sprin automatically closes the valve 26into orcible contact with the plain face 18 of the case 1.

The splitting of the case 1 and the screw- 110 clamping together of theears 31 by the screw 32 tendsto lock the flange. 5 and tube 33 together.l

The radial splits 41 of the annular flange 40 of the thumb piece 39 andthe radial 1.15

spreading of the sections of said flange, as illustrated in Figs. 2, 3,7 and 8, give a spring-pressure to said flange sections sutlicient toinsure a proper frictional connection between the thumb piece 39 and thebot- 120 tom 34 of the tube 33 toprevent accidental displacement and tohold the valve rodv 50,

51, 53 set in its adjusted position.

The v'tube or gasol'ene chamber 6 may be recessed or concaved as at 66(Fig. 6) to 125 enable a better flow of -gasolene from the y tube orchamber down behindthe ball valve -12 into the lowerpart or nozzle ofsaid tube en the internal pressure in the chamber 2 is less in degreethan the shown I produce a very simple and effective carbureter andgreatly reduce the number of parts heretofore commonly employed.

The size of the carbureter is considerably lessened and the cost ofmanufacture reduced.

There is no float valve or mechanism therefor to supply the carbureterwith gasolene. The gasolene i'lows unobstructed under the gravitypressure of its own head directly to the gasolene chamber or tube nozzle6.

It is an important feature of my invention that whereas in othercarbureters the nozzle or vdischarging orice, whereby the gasolene issupplied to the carbureting chamber or carbureting means, is directedupwardly, in my said construction the discharging end or nozzle ofthegasolene tube or chamber 6 is directed vertically ,downlward, thusfacilitating the discharge, and

especially enabling the exit of dirt and other foreign matter which maybe contained in the gasolene as said liquid flows from the gasolenetank. When the nozzle discharges a stream or jet of .gasolene upwardly,such dirt and foreign substances are force up into the nozzle andarepacked close therein and soon form a clog to diminish and ultit matel toprevent the discharge of the liquid there om. In my 'construction such'substances iow out from the nozzle in a downward direction and drop outentirely by gravity, assisted by the suction of the engine.

Another advantage, realized in my device as described, Vis that all thevalves are operatedA simultaneously and automatically.

i The combined air valve and throttle valve vopens wholly by the suctionof the engine;

the rise of the valve, so caused, uncovers the air ports and admits theatmopsheric air; and said rise of the said valve opens the L nozzlevalve 12, all at the same time. The opening of these valves is causedentirely by the suction of the engine. The closure of these valves iscaused simultaneously simply by an oscillation of the shaft 22, whichcauses the cam or curved arm 24 to press downward to its normalvposition the disk 44 of said valve and thereby to close the air ports 38and the ball or nozzle valve 12. These valve movements result Yfrom theoperation'of the link bar 61. The cam or curved arm 24 does notmechanically cause the-opening of these valves, but simply permits themand limits their extent, the motive bination of a carbureter case;a-shaft mounted transversely inthe case and capable of oscillatorymovement; means'for oscillating said shaft at will to vlimited extents;a fixed air inlet tube opening into the carbureter case and extendingfrom said case in an axial direction, which air inlet tube has portsthrough the sides thereof, located and arranged to deliver atmosphericair into the carburetor case; 'an outlet pipe communicatingv with theinterior of the carbureter case and extending therefrom to the engine; agasolene-supply pipe extending in the axial line of the carbureter caseand of the air inlet tube and discharging into the air inlet tube; atubular valve fitting slidably in the air inlet tube and adaptedalternately to cover or uncover the ports of said tube and having at itstopa disk provided with a'central aperture for the passage therethroughof said gasolene-supply tube, which disk has the same diameter as thetubular body of the valve and is adaptedfto be moved with said valve bythe suction Tof 'the engine, said tubular body being provided with sideopenings adjacent to but beneath the disk, which openings are covered bythe air inlet tube when the tubular body of said valve is 'whollycontained in the air, inlet tube in contact therewith, but are open tothe interior of the carbureter case when the valve has been moved upbeyond the top .of the air inlet tube by the suction of the engine; anda curved arm mounted fast at its inner end on the shaft and in contactat its outer end with the disk and adapted to move the tubular bodyofthe valve into the air inlet tube 'and also to limit the extent of theupward movement of the tubular body of the valve when sald valve issubjected to the suction of the engine.

2. In a carbureter for an engine, the -;m

bination of a carbureter case; a shaft mounted transversely in the case@d capable of osclllatory movement; means for oscillating said shaft atwill to limited extents; a xed air inlet ltube opening into thecarbureter case and extendi from said case in an axial direction, w ichair inlet tube has ports through the sides thereof located and arrangedto deliver atmospheric air the carbureter case; an outlet pipecommunicating with the interior of the carbureter case and extendintherefrom to the engine; a asolene-supp y pipe extending in the axialine of the carbureter case and of the air inlet tube and discharginginto the air inlet tube; a tubular valve fitting slidably in the thesame diameter as it and supported paralair inlet tube and adaptedalternately to reter case at will, when the valve isextended up beyondthe inner endof the air inlet tube, but said side apertures 'beingcoveredV by the air inlet tube when the valve and disk are seatedtherein; and a cam mounted fast on the shaft with its ,workingl surfaceadapted to contact at will with the throttling disk to force the valveinto the air inlet 'tube and also adapted to-limit the movement `of t-hevalve along the air inlet tube when said valve is Apartiallywithdrawntherefroml by the suction of the engine. v

3. In a carbureter for an. engine, the combination of a carbureter case;a shaft mounted transversely iny the case andc'apable` of oscillatorymovement; vmeans for oscillating said shaft at will to limited extents;a fixed air inlet tubeopening into the carbureter case and extendingtherefrom in an axial direction, which air inlet tube has ports throughthe sides thereof, located and arranged to deliver atmosphericl air tothe car- L'bureter case; an outlet pipe communicating with, the interiorof the carbureter case and extending therefrom to the engine; agasolene-supply pipe extending in the axial line of the carburetercaseand of the air inlet tube and discharging into the air inlet tube; atubular valve fitting slidably in the air inlet tube and adaptedalternately to cover and uncover thevports of the air inlet tube, andprovided with side apertures; a throttling disk having a central openinfor the passage therethrough of said gaso en, -sup ply pipe, which--diskis fastened upn the top of thetubular valve and concentric with thetubular body' ofthe valve, havingA the same diametery and adapted tobemoved 'with the valve "by the suction of the engine; anda cam mountedon said" shaft and movable therewith andadapted to c lose the valve 'by'pressure upon said disk, said valve a erf tures being arranged so as tobe covere by the. air inlet tube when the valve is closed.

4. 'In acarbureter for an engine, the combination of a carbureter case;a shaft mounted transversely in the case and capable of an oscillatorymovement; means for oscillatin said shaft at will to limited extents; afixed ,air inlet tube opening into the carbureter case and extendingtherefrom in an axial dif rection, which air inlet tube has orts throughthe sides thereof, located an ar= ranged to deliver atmospheric air tothe 'carburetercase; an outlet pipe communicatin i with the interioroffthe carburetor case an to the engine; a sondin l in the axi'a line rease an ofthe air inlet tube andv discharging into the air inlet tube; atubular valve fitting slidably in the air inlet tube and adaptedalternately to cover and uncover the ports of the air inlet tube andprovided with side apertures; a throtpassage therethrough of saidgasoliene supply pipe, which disk is mounted upon the top ofthe tubularvalve; and a cam mounted o n and vmovable with the shaft and inoperative contact with the upper surface of the throttling disk. y l

5; In a carburete'r, the combination of a carburetercase; an air inlettube extending into saidcase; a gasolene-supply tube supported in thecase and extendin into the air .70 tlingA disk having acentralopeninvfor the inlet tube; a discharging nozz e at the end 1 of thegasolenev-supply tube, providedwith a valve seat; a ball valve normallysupported by the valve seat; a -slidably mounted valve within the airinlet tube, havin eral apertures, which, when the sliable valve iswholly contained in the air inlet tube,

are covered thereby,A but which open intol the carbureter case, when theslidable valve projects beyond the upper end of the air inlet tube; avalve rod mounted' in and movable with said slidable valve, and whoseupper end is in constant contact with the ball valve and is adapted tounseat the ball valve in the nozzle, whenever the slidable valve movesup along the air inlet tube; an outlet tube from the carbureter caseadapted todischarge into an engine; and a cover fastened on the slidablevalve adapted to be lifted inthe air inlet tube by the suction of theengine.

6. In a carbureter, the combination of a carbureter case; an air inlettubeextending into said case; a gasolene-supply tube suplatported in thecase and extending into the l lwith a valve seat; aball` valve adaptedto `lit in said seat.; spring normally pressing the ball valve intocontact with said seat; a slidable vvalve mounted within the air inlettube' and having lateralapertures, which, when the slidable valve iswholly contained in thel -air inlet tube, are covered thereby, but whichvo en into the carbureter case, when the slidlaibl'e valve projectsbeyond the upper end of the air inlet tube; a valve rod mounted in and"movable with the slidable valve and whose up 4er end is in constantcontact with .the bal valve and is ada tedy to unseat the ball valve inthe nozzle, w enever the slidable valve rises in the air inlet tube; anoutlet tube from the carbureter Case adapted to discharge into anengine;

and a cover fastened on the upper end of the slidable. valve and adaptedto be lifted in the air inlet tube by the suction of the engine.

7. In a carbureter, the combination of a carbureter case; agasolene-supply tube supported in the case and extending into the airinlet tube; a discharging nozzle at the end of the gasolene-supply tube,provided with a valve seat; a ball valve adapted to fit in said seat; apresser bar mounted in the gasolene-supply tube and having its lower endin Contact with the ball; a spring in the gasolene-supply tube havingits upper end bearing against the upper end of the gasolenesupply tubeand its lower end bearing against the presser bar; an air inlet tubeextending into the carbureter case; a slidable' valve having lateralapertures and mounted in the air inlet tube, which apertures, when theslidable valve is Wholly contained in the air inlet tube, are coveredthereby, but which open into the carbureter case, When the slidablevalve projects beyond the upper end of the air inlet tube; a valve rodmountedin and movable with the slidable valve and Whose upper end is inconstant contact With the ball and is adapted to unseat the ball in thenozzle against the pressure of said spring, Whenever the slidable valverises in the air inlet tube; an outlet tube from the carbureter case tothe engine; and a cover fastened on the u per end of the slidable valveadapted to be lifted in the air inlet tube by the suction of the engine.y

8. -In a carbureter,vthe combination of a carbureter case; an air inlettubeextending intosaid case; a gasolene-supply tube supported in thecase and extending into the air inlet tube, a discharging nozzle at theend of the gasolene-supply tube, provided with a valve seat; aspring-pressed ball adapted to fit in said seat; a slidable valvemounted Within the air inlet tube and having lateral apertures, which,when the slidable valve is Wholly contained in the air inlet tube, arecovered thereby, but which open into the carbureter ease, when theslidable valve projects beyond the upper end of the air inlettube; avalve rodmounted in and movable With the slidable valve and Whose upperend is in constant contact with the ball and is adapted to unseat theball 1n the nozzle Whenever the slidable valve rises in the air inlettube; an outlet tube from .the

carbureter ease and adapted to discharge into an engine; and a coverfastened on the upper end of the slidable valve adapted to be lifted inthe air inlet tube by the suction of the engine.

9. In a carbureter connected with an engine, the combination of acarbureter case; an air inlet tube extending into said case; a,gasolene-supply tube supported .in the case and extending into the airinlet tube; a dischar ng nozzle at the end of thegasolenesuppl;7 tube,provided with a valve seat; a

Y spring-pressed ball adapted to fit in said seat; a slidable valvemountedwithin the air I inlet tube and provided With a cover whereinginto said case; a gasolene-supply tube supported in the case; adischarging nozzle atv the end of the gasolene-supplying tube; a valveseat in the nozzle; a spring-pressed ball adapted to fit in said seat, aslidable valve mounted in the air inlet tube and having a cover and alsolateral apertures, which when the slidable valve projects beyond theupper end of the air inlet tube, communicate with the interior of thecarbureter case, but which, when the slidable valve is wholly containedin the air inlet tube, are covered thereby; an outlet pipe from thecarbureter case adapted to discharge into an engine; a valve rod carriedby the slidable valve and at its upper-end in contact With the lowersurface of the ball and adapted to unseat the ball in the nozzle; `anoscillatory shaft mounted in the carbureter case; means` to give anoscillatory movement to the shaft; and a cam fastened on the shaftcapable of moving the slidable valve downward into the air inlet tubeand also of limiting the rise of the slidable valve When said valve islifted. in the air inlet tube by the suction of the engine.

11. In a carbureter, the combination of a carbureter case; a gasolenetube having a discharging nozzle; a ball valve seated in the nozzle;means for supplying gasolene to the tube; a valve rod in contact withsaid valve; and means adapted to move the valve rod to unseat said ballvalve.

12. In a carbureter, the combination of a carbureter case; a gasolenetube Within the carbureter case; a gasolene supply pipe entering saidtube midway its ends; a downwardly directed nozzle Within the carburetercase adapted to discharge gasolene from said tube by gravity andprovided with a valve seat; a ball in said nozzle fora valve normallyresting upon said seat; and means for lifting and' lowering said ballvalve at will, said gasolene tube being provided with a recess in itsside opposite to the discharging end of said pipe` for the purpose ofsupplying gasolene to the nozzle in the rear of said ball.

13. .In a carbureter, the combination of a carbureter case; agasolene-supply tube havv ing a nozzle within the case; means for suplying asolene to the tube; a ball 1n said nozzle or a valve; a valverod in contact with the ball and adapted to move the ball to allow adischarge of gasolene from the Jtube through the nozzle; an air 'mlettub Appening into thev case and having lateral near the bottom thereof;a valve having a tubular body and an open bottom and mounted slidably inthe air inlet tube, which tubular kbody has near its top air-dischargingports through its sides; a disk for a cover of said slidable valve;means for supporting the valve rod upon the slidable valve; and meansfor giving to said slidable valve movements in alternatelyoppositefdirections, said slidable valve being so arranged and movablein the air inlet tube that when the upper 'end of said slidable valveprojects beyond the upper end of the air inlet tube the air-dischargingports of the slidable valve open into the carbureter case. 14. In acarbureter for an engine, the combination of a carbureter case; an airadmission tube opening into the case and provided with lateral airports; a tubular valve slidably mounted inthe air admission tube andhaving a centrally perforated cover and an open bottom, said tubularvalve being provided with a plurality of air apertures just beneath thecover; a gasolene-feed t-ube having a nozzle which extends through theperforation of said cover into the tubular valve; a valve in the nozzle;a cross bar in the tubular valve extending diametrically thereof; a

valve rod supported by the cross bar and projecting into the nozzle to oerate the nozzle valve; an oscillatory sha t mounted `in the carburetercase; an operating rod ,for

oscillating the shaft; a cam on the shaft in contact with the cover ofthe tubular valve adapted to depress the tubular valve when the shaft isoscillated in one direction but to limit the rise of the tubular valvein the 0pposite direction; and an outlet pipe from the carbureter caseto the engine, said tubular valve being movable upwardly by the suctionof the engine, and said tubular valve and air admission tube coperatingto close the air apertures of the'tubular lvalve and to close -thelateral air ports of the admission tube when the tubular valve isWholly, contained in the air admission tube, but to uncover the llateralair 'ports of the air admissio tube and to open the air apertures of thetubular valve when the tubular valve pro'e'cts 11p-beyond the top of theair admis- Y sion tube.

15. In acarbureter, th' mbination of a carbureter case; an air adfission tube opening into theitcase and rotatably connected therewithrovided with laterali-air ports; a tu valve having an open bottom andacentrallI perforated cover, which tubulavalve is slldably mounted inthe air admission tube, and has one longitudinal slot and a plurality ofair apertures just beneath the 'cover';`a pin extending from the airadmission tubeggzi v'ardly through said slot; a gasolene-feetd. "be inthe car 'ureter ports! case and having a nozzle which projects looselythrough the aperture ofthe valve cover; a valve in said nozzle; a crossbar extending diametrically in the tubular valve; a valve rod supportedon the cross bar and projectin into the nozzle to operate the nozzle vave; anoscillatory shaft mounted in the case; and a cam on the shaft incontact with said cover to limit the movements of the tubular valve inthe air admission tube, the air admission tube servin to close the airapertures ofthe tubular va ve when the tubular valve is Wholly containedin the admission tube and the air ports of the air admission tube beingcovered when the tubular valve is wholly contained in the air admissiontube, but the air apertures being capable of discharging into thecarbureter case when the tubular valve projects up beyond the top oftheair admlssion tube.

16.v In a carbureter connected with an ensov gine,- and havin acarbureter case, the combination therewith of the combined throttlevalve and air valve herein described cornprising a centrally' perforatedcircular disk; a tube longitudinally slotted; a plurality of postsconnecting the top of the tube to the .w ich said combined throttlevalveand air valve is slidable and which extends into said case and isprovided withlateral airports and ilsowith a pin which projects looselythrough the slot of the first named tube and also' havinga bottom inwhich is a central threaded hole; a thumb piece in threaded enga ementwith @lid threaded hole, which thum wherein the square stemof the valverod is slidable but not rotatable; oscillatory shaft mounted in theeasegan outlet pie from the case to the engine; a cam Von t e shaftadapted to de ress the combined throttle valve and air va ve when theshaft is oscillated in one direction and to limit the rise of ysaidcombined valve when the shaft isoscillated in the opposite direction;- al gasolene-feed tube havinga downwardly extendving nozzle in thevertical axial line of the carbureter case and passin throughla .centrallaperture of sald diei into the rst named tube; a valve seat saidnozzle; and a ball normally resting on the valve seatV in loose contactwith the upper end of the ar extendpiece has a central square aperturevalve rod, said intermediate apertures opening into the carbureter casewhen the tubular body of the air valve projects u beyond the top of theair inlet tube but c osed by the inlet tube when said tubular body ofthe valve is wholly contained in the air inlet tube, at which time alsothe said tubular body of the air valve closes the lateral ports of theair inlet tube.

17 In a carbureter, the combination of a gasolene tube having a nozzle;a ball seated in the nozzle for a valve; a valve rod comprising threeintegral portions,-a truncated cone-shaped upper portion extending intothe nozzle and having its large end adapted to contact with said ball, acentral cylindrical threaded portion and a lower portion square in crosssection; a support vertically movable and provided with a centralthreaded bearing with which said central threaded portion of the valverod is engageable; and a thumb screw mounted loosely'by a square centralaperture on the lower portion of the tez-valve rod and adapted to adjustthe position of 't'l`1e`valve rod longitudinally.

18. In a carbureter connected with an engine; the combination of acarbureter case; an air admission tube opening into the case and havinglateral ports and a closed bottom with a centrally perforated boss; a

thumb piece mounted rotatably in the perforation of the boss and havingan axial bore which is square transversely; a valve rod which at itslower end is square in cross section extending slidingly in the axialbore of the thumb piece, but which is round and threaded at its centerand at its upper end is shaped like-a truncated cone 'with-its "largeend uppermost; a support having a central threaded bearingto receiveyrotatably the threaded portion of the valve rod; a slidable valvemounted in the air admission tube and capable of partial withdrawaltherefrom by the suction of the engine, which valve has lateral portsand is adapted to cover the lateral ports of said tube when fully seatedtherein and to uncover the lateral ports of said tube` when partiallywithdrawntherefrom, said lateral ports of said valve being covered by-said tube when said valve is fully seated in said tube but uncovered tocommunicate with the carbureter case when said valve is partiallywithdrawn from said tube as aforesaid; a gasolene-feed tube discharginginto the sliding valve and having a nozzle into which the inner end ofsaid valve rod enters loosely; a ball in the nozzle for a valve tocontrol the delivery of the gasolene and movable by said valve rod; an

outlet tube from the carbureter case to the 19; In acarbureter connectedwith an engine, the combination of a carbureter case; an air admissiontube opening into the case and having a closed bottom with a centrallyperforated boss; a thumb piece mounted'rotatably in the`perforation ofsaid boss and having an axial bore which is square transversely andprovided with longitudinally split flanges capable of being bent orflared to lie in the bore of said boss with a springpressure; a valverod -which at its lower end is square in cross section and extendsloosely in the axial bore of the thumb piece but is rotatable with thethumb piece, and which is round and threaded at its center and which atits upper end is shaped like a truncated cone with its large enduppermost; a support having a central threaded bearing to receiverotatably the threaded portion of the valve rod; a gasolene-feedtubehaving a nozzle into which the upper end of the valve rod entersloosely; a ball in the nozzle for a valve to control the delivery of thegasolene and movable by said rod; a slidable air valve verticallymovable in the air admission tube by the suction of the engine, anoutlet pipe from the carbureter case to the engine; an oscillatoryshaftA lene-supply chamber in which said gasolene feed valve is movable;a shaft mounted in the case; means to oscillate the shaft; and meansoperated by the shaft for limiting the movements of all of said valves.

21. In a carbureter, the combination of a carbureter case; an outletpipe from the case adapted to conduct carbureted air to an engine; anair inlet tube opening into the case; a longitudinally movable suction orated throttle valve in thel case; a longitu inallymovablesuction-operated air valve mounted in the air vinlet. tube; alongitudinally-movable suction-operated gasolene-fee'dvalve; agasolene-supply chamber within? the case; a shaft mounted in the case;meansffor oscillating said shaft; and means operated by the shaft andadapted to close all said valves at will.

22. In a carbureter, the combination of a carbureter case; an outletvvgpipe therefrom; an air inlet tube opening into said case; means forsupplying gasolene to the carbureter for mixing the vapor of said gaso-Iene with theair delivered to the carbureter 'by the air inlet tube;means for discharging the carburete'd air when produced and a'cam in thecase for closing at will said gasolenesupplying means an said means fordischargmg carbureted air or for simultaneously permitting and limitingat will the opening of said gasolene-supplying means ALBERT HVOWARTH.`Witnesses 'WARREN R. PERCE, HOWARD A. lLamnmr.

